I also found a bit about the church, which mentioned a number of stones on it, but not one of these is about a miller. Happy to read info on this supposed stone to the miller on the church if the claim can be substantiated.

It really is interestesting how much 'lore' gets created about songs, much of which turns out to be fiction.

Incidentally, I have a book by Roy Palmer on British history through the broadsides and it is quite interesting.